WIMs are file-based, meaning they can be applied to any partition size, whereas VHDs are often tied to a specific disk size.
WIM files use LZX or XPRESS compression , making them significantly smaller than a raw VHD. vhd to wim
If you have a VHD with multiple partitions (e.g., System Reserved + C:), you cannot capture it directly. Use a script to mount, identify the OS volume, and capture. WIMs are file-based, meaning they can be applied